In the fight hype interview, Martinez said 20x20 is mandatory in Vegas.

Quote:

MJ: Has everything been worked out as far as ring size and glove choice?

Sergio Martinez: These are the only things missing. I'll be requesting 20 X 20, but I think that is mandatory in Vegas. It will not be an issue. The gloves will not be an issue. I will use Reyes and he can use whatever, but I will request that he weighs the gloves, because we want to be sure the company he uses really has ten ounce gloves. In the past [Maidana vs. Cayo], there were issues with gloves being weighed a few fractions of an ounce too heavy or too light, not exactly ten ounces.

Is there any evidence out there that shows a smaller ring gives Sergio a disadvantage at all? Look at how he fights...he gets really low and pounces on guys...guys who fight like that can fight the same regardless of ring size. You won't see JCCj doing a happy dance making fun of Sergio unless he feels like getting popped in the mouth for the hell of it.